OP: By speed what are you talking about exactly? It sounds to me like meth? or are you talking about street amphetamine? or Adderall/Dexedrine? The only one I have any experience shooting, is Adderall, which is absolutely horrible in the fact that it doesn't work well at all, even though it has ~%100 BA when slammed, it is extremely hard to prep using 1ml rigs, which is the biggest rigs I have access to, and what I used to do it the 3 times I tried.. each time I tried it I used around 20-30mg of Adderall IR tabs, and 100 units or 1ml of water, had to filter it like 4 times through cotton balls, and it then after all of that work looked like a nice, clearish-orange solution, no cloudiness, so the first time I did it... I got a small, strange, edgy-speedy, but very short high with absolutely no rush whatsoever... the next time i used more, 25mg, still it sucked... 30mg no better... So if you are speaking about Adderall, it is not worth it at all! terrible on your veins, and the high is no where near as good as sniffing, oral, or plugging gives... sniffing being my ROA of choice with these pills, it works better than oral, don't have to worry as much about the acidity of your stomach contents like with oral and lasts just as long IME, however most people claim it lasts like half as long as oral would for them, but i guess i am different because just 20mg intranasal usually sniffed around 10 am will have me speeding, and feeling good and ADHD free more than half of the day, I don't even feel it wear off either, prob because i also take klonopin with it... so i guess that is most likely why i get no comedown from it.. some say its the worst comedown ever, but i think coke/crack has a way harsher comedown.. I have always been interested in trying meth, or crystal meth to be specific... but for some reason, it isn't available in my area of FL.. never once, in the 10+ years i have been a drug user, have i ever even heard of meth being here. I guess it is better i don't try it, because i don't need that monkey on my back, already have multiple other addictions.